the ancient urge to build a dual-woofer three-way

Pat McGinty

Senior Member
Here's another even more happy thing you can't do any other way:

ibis upper bass.jpg


You don't even want to imagine executing a five pole Butterworth bandpass in passive, especially at these frequencies. You'd have capacitors the size of cantaloupes and inductors the size of bundt cakes. Plus, again, it would be pointless because it would suck.

So, what's the reason for wanting two bands in the bass? There's really no such thing as a driver that is both competent at 20Hz and can articulate at 200Hz. And vice versa. Heretofore there hasn't been a solution so, again, a lot of splitting of babies.....never has anyone totally nailed it in the bass. The state of the art has been just sorta OK.

This solution is our Trademark: Dual Band Bass. It solves the problem elegantly in a single stroke. This does not sound like any bass system you've ever heard. It kinda takes your breath away. So far, this has proven a remarkably effective sales tool. Guys who experience it immediately shift their expectations of low frequency performance, spoiled, they find a way to buy it. Ha, ha, ha....I know it's bad....but I do it anyway :-)
 

Prime Minister

Site Owner
Staff member
Here's another even more happy thing you can't do any other way:

View attachment 16753


You don't even want to imagine executing a five pole Butterworth bandpass in passive, especially at these frequencies. You'd have capacitors the size of cantaloupes and inductors the size of bundt cakes. Plus, again, it would be pointless because it would suck.

So, what's the reason for wanting two bands in the bass? There's really no such thing as a driver that is both competent at 20Hz and can articulate at 200Hz. And vice versa. Heretofore there hasn't been a solution so, again, a lot of splitting of babies.....never has anyone totally nailed it in the bass. The state of the art has been just sorta OK.

This solution is our Trademark: Dual Band Bass. It solves the problem elegantly in a single stroke. This does not sound like any bass system you've ever heard. It kinda takes your breath away. So far, this has proven a remarkably effective sales tool. Guys who experience it immediately shift their expectations of low frequency performance, spoiled, they find a way to buy it. Ha, ha, ha....I know it's bad....but I do it anyway :-)
That's incredible.
I just never imagined that would be doable . This is speaker designer dream come true stuff.
 

Pat McGinty

Senior Member
Yeah, last week I had a long conversation with a fellow intent on persuading me to build some conventional speakers. Not the first time for that chat and, as with those before, he hasn't heard my current work. I understand, we all love conventional audio and the few dsp/powered things out there are aimed low. So it's easy to wave the new ideas away, and stick with the old way.

So I explained that I'm at a stage in life when I will do no work other than my best.

Being able to execute ideas like this really is a dream. Slaying dragons that have dogged us for decades. So, conventional? Aaahhhh......no thanks. :-)
 
Top